Try to understand what you learn. Things that you understand are memorized 9 times faster.
Learn the most necessary information. You need to set your priorities correctly.
Take this into consideration: things that are at the beginning and at the end are memorized the best (serial position effect).
Switch your attention from one topic to another. Remember that similar memories get mixed (interference theory) and become a "mess."
Learn opposite things. For example, if you are learning a foreign language, memorize day and night. Opposites are easier to memorize.
Build your own "mind palace." The idea is to associate certain things with a certain place. For example, if you are in your room, try to connect a thing you are learning to something in your room. Repeat it a few times. After that, try to recall what the room looks like in your memory, and repeat the things you learned this way.
Use "nail words." The point of the technique is to nail one learned thing to another. So when you think of the nail, you automatically recall the other thing.
Associate new words with those you already know. If you are learning a language, you can memorize something new based on what you know.
Make up stories. If you need to memorize a lot of information in some particular order, try to put the pieces into a story. It's important that the pieces are connected to each other with some kind of plot.
Use a tape recorder. Record the information you are learning, and listen to the recording a few times. This method works best for people who memorize audio information better.
Visualize. Use body language when learning. This will help you trigger your muscle memory.
Choose only the best materials. Don't use outdated books and methods of learning. Things might have changed a lot since the books were written. Don't waste your time on something that may turn out to be wrong.

12 Secrets for Memorizing Things Easily